content string | quality_label int64 | meta string | all-MiniLM-L6-v2_embedding list | doc_id int64 | unique_id string |
|---|---|---|---|---|---|
problem on finding max value (URGENT)
May 28th 2009, 04:31 AM #1
Newbie
Joined
Feb 2009
Posts
2
problem on finding max value (URGENT)
I was wondering what would be the way to answer this question. I know that trial error is one way but i also know that there is a differential calculus like method. But i ... | 5 | [
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Are these subspaces of R^n?
November 12th 2011, 09:50 AM #1
Junior Member
Joined
Feb 2011
Posts
54
Are these subspaces of R^n?
Which ones of the following subsets of $\mathbb{R}^n$ are subspaces.
a) $L=\{x= \[\alpha_1,\ldots,\alpha_n\]^\top\ | \sum_{i=1}^n (-1)^n\alpha_i =0\}$
b) $M=\{x= \[\alp... | 5 | [
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Point on a line closest to the origin
November 18th 2007, 05:21 PM #1
Point on a line closest to the origin
On my last calc test, they asked f(x)=10x+5, what point in the function is closest to the origin?
I solved it by finding the normal line which intersects the origin, then finding where that line inters... | 5 | [
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explanation of formula for sum of sequence
May 23rd 2010, 01:44 PM #1
Junior Member
Joined
Feb 2010
Posts
52
explanation of formula for sum of sequence
The question ask to find a formula for the sum of the first n terms of the sequence
9,13,17,21,....
So the answer is Sn= n(2n + 7)
Can som... | 4 | [
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Math Forum Discussions
Re: HELP - SQRT(3)
Posted: Nov 17, 1997 7:34 AM
On Sat, 15 Nov 1997, Jean-Pierre MERX wrote:
> Emanuel Binnun wrote:
> >
> > Hi
> >
> > Please help me to proove that Square root of 3 is an irrational number
> >
> > Thanks
> > Boaz
> > Israel
> Hi Boaz,
>
> suppose that SQRT(3) is a rationna... | 4 | [
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Iņigo Quilez - fractals, computer graphics, mathematics, demoscene and more
A nice way to render fractals like Julia o Mandelbrot sets of polynomails is to use the distance from the current pixel to the boundary of the set. This avoids the usual
aliasing problem of rendering fractals, where details are just t... | 4 | [
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Study on heritability of growth in the juvenile sea urchin Strongylocentrotus nudus.
Link/Page Citation
ABSTRACT The heritability of growth of juvenile Strongylocentrotus nudus was analyzed using quantita... | 4 | [
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User:Timothee Flutre/Notebook/Postdoc/2011/11/10
From OpenWetWare
(Difference between revisions)
(→Entry title: move info about help2man and groff to the "templates" page) (→Entry title: first version)
← Previous diff Next diff →
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f & g Riemann integrable, show fg is integrable
March 15th 2010, 10:37 PM
kingwinner
f & g Riemann integrable, show fg is integrable
If f and g are both Riemann integrable on [a,b], prove that fg is also Riemann integrable.
This is what I've got so far...
Let ||f||∞= sup{|f(x)|: x E [a,b]}
$M_i(f,P... | 4 | [
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Train Problems Sample Problems
Math Practice Online > free > lessons > California > 9th grade > Train Problems
If your child needs math practice, click here.
For sample problems, click here.
Here are some tips for Train Problems, which aligns with California state standards:
... | 4 | [
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Measurement of Plasmodium falciparum transmission intensity using serological cohort data from Indonesian schoolchildren
Abstract
Background
As malaria transmission intensity approaches zero, measuring it becomes progressively more difficult and inefficient because parasite-positive individuals are hard to detect. Th... | 4 | [
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Circle
Go to Fun_Math Content Table Three Famous Problems Greek Circle Squarer
Greek Circle Squarers
Archimedes--"On the Measurement of the Circle"
Archimedes (287BC - 212 BC) was the first to give a method of calculating p to any desired degree of accuracy.
His method is based on the fact that the perimeters of t... | 5 | [
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Changing order of integration?
October 20th 2008, 11:25 AM
Lipticboven
Changing order of integration?
In The integral
$\int_1^{2} dx \int_{2-x}^{\sqrt{2x-x^2}} f(x,y)dy$
Change the order of integration.
Can any1 tell me how to do this?
i think y goes from 0 to 1 but i dont know how to do x.
O... | 5 | [
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Trig question pre calc!
October 26th 2013, 02:13 AM
Gurp925
Trig question pre calc!
Hi there, the question states
Prove algebraically: $\cos\theta/1-sin\theta$ = $sec\theta +(sec\theta)(csc\theta)-cot\theta$
Here are the steps i took to solving this i worked on the right side making it equal the left
... | 4 | [
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Gregorian or Julian date to Julian Day Number - Algorithm Development
2.1 Gregorian or Julian date to Julian Day Number - Algorithm Development
Algorithm development begins by choosing a base year. Converting from a Gregorian calendar date implies that the base year is relative to the year zero. If the given date is ... | 5 | [
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reciprocal number and rectangle with largest area
November 10th 2008, 07:48 AM
thecount
reciprocal number and rectangle with largest area
find a number such that the sum of the number and its reciprocal is as small as possible.
i have no idea what this means...
and...
find the dimensions of a rec... | 5 | [
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LinearSolve vs MatrixInverse
Let's compare the performance of two methods of computing the inverse of a large datatype=float[8] Matrix.
The two methods are that of calling `MatrixInverse`, and of calling `LinearSolve` with the identity Matrix as the "right hand side".
The point of the exercise is to try an determine... | 4 | [
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PCPOSVX
Section: LAPACK routine (version 1.5) (l) Updated: 12 May 1997 Local index Up
NAME
PCPOSVX - use the Cholesky factorization A = U**H*U or A = L*L**H to compute the solution to a complex system of linear equations A(IA:IA+N-1,JA:JA+N-1) * X = B(IB:IB+N-1,JB:JB+NRHS-1),
SYNOPSIS
SUBROUTINE PCPOSVX(
FACT,... | 4 | [
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log help
November 17th 2005, 04:08 PM
floridaboatkid
log help
Been trying to figure this out but haven't had any luck
There is eactly one real number k for which the equation
(log3x)(log5x) =k
has only one real solution for x. What is the value of x.
November 18th 2005, 01:49 AM
CaptainBlack
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Another fraction simplifying.
March 7th 2010, 04:52 AM #1
Newbie
Joined
Feb 2010
Posts
9
Another fraction simplifying.
Sorry I'm crap at this..
simplify
1/x^2-1 - 2/x+1
I expanded x^2-1 then cross multiplied
which i got -2x+3 / (x+1)(x-1)
Would that be right? I'm not quite sure on... | 4 | [
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Problem
Artificial Intelligence: Problem Set 1
Assigned: Jan. 22
Due: Feb. 5
Let G = < V,E > be a directed graph, where V is the set of vertices and E is the set of edges. Let K be a subset of V. K is called an independent set if no two vertices in K are connected by an
edge in E. A vertex u is said to cover ver... | 4 | [
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A Multipoint Correction Method for Environmental Temperature Changes in Airborne Double-Antenna Microwave Radiometers
Open Access This article is
• freely available
• re-usable
Article
A Multipoint Correction Method for Environmental Temperature Changes in Airborne Double-Antenna Microwave Radiometers
^1
Coll... | 4 | [
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Mid-point of chord on ellipse
May 12th 2010, 11:18 PM
arze
Mid-point of chord on ellipse
Prove that the equation of the ellipse $\frac{x^2}{a^2}+\frac{y^2}{b^2}=1$ at the point $P_1(x_1,y_1)$ is $\frac{xx_1}{a^2}+\frac{yy_1}{b^2}=1$. The tangent at $P_1$ meets the tangent at $P_2
(x_2,y_2)$ at T. Show that t... | 4 | [
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page6Simple Conical Projection
In this particular type of projection, the surface of the projected plane makes up a cone that circumscribes the globe with a selected parallel line tangential to the globe as seen in Figure A. Such
a line is defined as the standard parallel with the characteristic that it is the arc of a... | 4 | [
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Having trouble factoring
September 18th 2009, 06:00 PM #1
Newbie
Joined
Sep 2009
Posts
14
Having trouble factoring
Hey guys..I'm having trouble factoring some functions...I can pretty easily factor and find the solutions for linear and quadratic functions, but when it comes to cubic and..um..higher-power... | 4 | [
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Computing the stress concentration factor in bolted joint using FEM.
Link/Page Citation
Introduction
It is becoming increasingly important to accurately predict the behavior of bolted joi... | 4 | [
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CSE 254 L
CSE 254 LECTURE NOTES
April 12, 2007
ANNOUNCEMENTS
Handout today: The CRF tutorial by Sutton and McCallum.
NONLINEAR OPTIMIZATION
We have a function from R^n to R that we want to maximize. We'll use a global method: the entire x vector will be updated at once. (An alternative is called stochastic desc... | 4 | [
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3.3.1. Hashing and hashed types
How we can store a number i and find it again as fast as possible, that is, how can we decide whether we have stored this number or not? If we had an infinitely long array A at our disposal, we
simply could write the number i into the i-th element A[i] of the array. The test whether we h... | 4 | [
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Need help with roots of a equation
November 18th 2012, 11:32 AM #1
Newbie
Joined
Nov 2012
From
Jamaica
Posts
7
Need help with roots of a equation
Question :
Give that α & β are roots of the equation 2x^2 + 5x - 7 = 0
Find without solving the equation the value of (α -β)^2
Need to calcu... | 4 | [
-0.06982421875,
-0.039306640625,
0.07421875,
0.057373046875,
-0.0206298828125,
0.0791015625,
-0.0255126953125,
0.02099609375,
-0.0057373046875,
0.0111083984375,
0.05615234375,
-0.01397705078125,
-0.061279296875,
0.02490234375,
-0.037841796875,
0.091796875,
-0.01904296875,
0.0055541... | 3,928 | 3928 | |
Stuck @ integral :S
hello I really stucked at this one $\int arctan\left( \sqrt{\frac{1-x}{1+x}} \right) dx$
Let $I=\int arctan\left( \sqrt{\frac{1-x}{1+x}} \right) dx$ Substitute $x=cos(\theta)$ $\implies \frac{1-x}{1+x}=\frac{1-cos(\theta)}{1+cos(\theta)}$ $=\frac{2 \, sin^2(\frac{\theta}{2})}{2 \, cos^2
(\frac{\the... | 5 | [
0.023193359375,
-0.05126953125,
0.0712890625,
0.00341796875,
0.004058837890625,
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0.01422119140625,
0.0299072265625,
-0.06982421875,
0.0771484375,
-0.046875,
-0.07177734375,
-0.0419921875,
0.05908203125,
-0.0277099609375,
0.01806640625,
0.021728515625,
-0.004760742187... | 3,929 | 3929 | |
Multivariate Normal Distribution
Background
The multivariate normal distribution is a generalization of the univariate normal to two or more variables. It is a distribution for random vectors of correlated variables, each element of which has
a univariate normal distribution. In the simplest case, there is no correlat... | 5 | [
0.0595703125,
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0.0751953125,
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0.10107421875,
0.06640625,
0.06640625,
0.03955078125,
-0.025634765625,
-0.0267333984375,
0.033203125,
0.01361083984375... | 3,930 | 3930 | |
KDOQI CKD Guidelines
KDOQI Clinical Practice Guidelines for Chronic Kidney Disease: Evaluation, Classification, and Stratification
PART 5. EVALUATION OF LABORATORY MEASUREMENTS FOR CLINICAL ASSESSMENT OF KIDNEY DISEASE
GUIDELINE 4. ESTIMATION OF GFR
Estimates of GFR are the best overall indices of the level of k... | 4 | [
-0.0164794921875,
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0.04345703125,
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0.04052734375,
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-0.00799560546875,
-0.00... | 3,931 | 3931 | |
Special Triangles Question
June 1st 2011, 05:51 AM
starshine84
Special Triangles Question
I am looking for help with this question from my grade 11 advanced functions course:
csc θ = -17/15 where 270° ≤ θ ≤ 360° and
cot β = - 3/4 where 90° ≤ β ≤ 180°.
Find the exact value of sin(θ + β). Show all th... | 4 | [
-0.0771484375,
0.08984375,
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-0.033203125,
0.0625,
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0.029541015625,
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0.035888671875,
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0.033447265625,
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-0.02319335... | 3,932 | 3932 | |
Posts about Idempotence on consumedbywanderlust
If Jon were idempotent, then if we multiplied Jon with Jon, we'd end up with Jon. Math is fun!
Remember that time I went to Montreal just a few days ago? Well, as I had mentioned, it wasn’t all just fun, food, and sampling the fine fares of a most excellent city. It wa... | 5 | [
-0.032958984375,
0.060546875,
0.044677734375,
-0.0157470703125,
0.0458984375,
0.0146484375,
0.09521484375,
0.0206298828125,
0.03173828125,
-0.0169677734375,
-0.039306640625,
0.00139617919921875,
0.1298828125,
0.041748046875,
-0.01171875,
-0.01507568359375,
0.0146484375,
-0.04199218... | 3,933 | 3933 | |
st: How to improve accuracy in numerical integrations using Stata
Notice: On March 31, it was announced that Statalist is moving from an email list to a forum. The old list will shut down on April 23, and its replacement, statalist.org is already up and running.
[Date Prev][Date Next][Thread Prev][Thread Next][Date In... | 5 | [
-0.072265625,
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-0.00142669677734375,
... | 3,934 | 3934 | |
Post Correspondence problem
Next: Conclusion Up: A Powerful Grammar Formalism Previous: Other versions of the
In this section I show that the p-parsing problem for undecidable (cf. [33, pp.178-179]) if there is no algorithm that takes as its input an instance of the problem and determines whether the answer
to th... | 4 | [
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... | 3,935 | 3935 | |
Quotient Rule Lesson Plans & Worksheets | Lesson Planet
Quotient Rule Teacher Resources
Find Quotient Rule educational ideas and activities
Showing 1 - 20 of 69 resources
In the first example, instead of actually using the quotient rule, Sal rewrites the denominator as a negative exponent and uses the product rule. ... | 4 | [
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0.0859375,
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0.0021514892578125,
0.0869140625,
0.032958984375,
0.02099609375,
-0.1279296875,
0.06201171875,... | 3,936 | 3936 | |
Variance(U) formula if U=aX+bY+cZ+d
I don't find this formula anywhere. Wikipedia has the case where: Var(aX+bY)=a^2*Var(X)+a^2*Var(Y)+2abCov(X,Y). How to derive formula for my case?
So you want to find $var(aX+bY+cZ+d)$ Denote $\alpha = aX + bY$ $\beta = cZ+d$ Your problem then becomes $var(\alpha + \beta)$ Of course... | 4 | [
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-0.01080322265625,
-0.00262451171875,
0.1... | 3,937 | 3937 | |
Infinite solutions proof
October 30th 2012, 04:01 PM #1
Junior Member
Joined
Oct 2012
From
Wisconsin
Posts
29
Thanks
1
Infinite solutions proof
Hello all,
I'm practicing proofs and I'm stuck. Here it is:
Prove that there are infinitely many solutions in positive integers x, y, and z t... | 4 | [
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Uncertainty of Measurement
Introduction and Overview
Under ISO 17025 (clause 5.4.6) laboratories are required to estimate the uncertainty of measurement in all tests. At present, however, testing laboratories are not required to report uncertainty
except under the following circumstances.
The purist might well ar... | 5 | [
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0.04370117... | 3,939 | 3939 | |
Grade 7 - Mathematics
Definition: In general, ax^n+bx^n-1+.............+px+q (a is not equal to zero) is called a polynomial of degree n. Here the coefficients are either integers, rationals or both.
┌───────────────┬─────────────────────┬───────────────────────────┐
│Expression │Polynomial │Degree and n... | 4 | [
-0.03125,
0.04931640625,
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0.083984375,
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-0.053466796875,
... | 3,940 | 3940 | |
Finding the inverse of this function
September 21st 2009, 06:32 PM #1
Junior Member
Joined
Sep 2009
Posts
34
Finding the inverse of this function
f(x) = 3 + x^2 + tan(pi(x/2)) , -1 < x < 1
I found the inverse and it was:
3 + y^2 + tan(pi(y/2)), -1 < y < 1
Correct me if I was wrong.
The... | 4 | [
-0.06201171875,
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0.01708984375,
-0.0267333984375,
-0.0030364990234375,
-0.0211181640625... | 3,941 | 3941 | |
problems on limits of sequences
April 8th 2007, 06:20 PM #1
Junior Member
Joined
Jul 2006
Posts
73
problems on limits of sequences
1)
Determine whether or not the following limits exist. Justify your answers:
A) Lim x->0+ (1/x)
B) Lim x->0+ |sin(1/x)|
C) Lim x->0+ xsin(1/x)
2)
De... | 5 | [
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-0.03125,
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0.0107421875,
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0.09375,
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0.003265380859375,
0.0439453125,
-0.0478515625,... | 3,942 | 3942 | |
Finance: nominal and effective interest rates | TeachBuzz
 
Add to Collection
Well-written/easy to understand
Level of student engagement
Encourages student higher level thinking
This lesson was written by
Free High School Science Texts Project
Objectives
Students will find depreciation rate.
Students wil... | 4 | [
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0.0546875,
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-0.009765625,
-0.007598876953125,
0.05... | 3,943 | 3943 | |
fficiency
Design efficiency in FMRI
This page tries to address the question of how to design fMRI experiments that are sensitive to (efficient for) a specific hypothesis (i.e, statistical planned comparison or "contrast"). The
properties of the BOLD signal measured by fMRI - particularly its "sluggish" nature - can m... | 4 | [
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0.040283203125,
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0.1416015625,
0.02... | 3,944 | 3944 | |
Polynomial Funtion HELP PLEASE!!!
October 13th 2007, 09:41 AM #1
Junior Member
Joined
Oct 2007
Posts
30
Polynomial Funtion HELP PLEASE!!!
Let f(x) be a polynomial function such that, for all real x.
f(x^2 +2) = x^4 + 10x^2 + 4.
Evaluate f(x^2 - 2).
THANKS FOR YOUR HELP!!!!!!
Wel... | 4 | [
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-0.009216308593... | 3,945 | 3945 | |
AQA A-level Maths: Core 1 Revision Notes - The Student Room
•
• AQA A-level Maths: Core 1 Revision Notes
This is just my notes for core1 AQA Maths by chapter...I've not included methods of doing things, just the name of them as I cant yet format properly equations. Ive tried to explain my notations
where they mig... | 4 | [
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-0.0206298828125,
0.09375,
-0.0712890625,
-0.02026... | 3,946 | 3946 | |
Quadratic Problem,
June 3rd 2011, 05:44 PM
spadda
Quadratic Problem,
I've been trying to figure out this question but i dont know where im going wrong when i plug back in the solutions i get, i get a bunch of wacky numbers...
question : x^2 + (x + 2) ^2 = 290
my work:
= x^2 + (x +2) + (x + 2) = 290... | 4 | [
-0.048828125,
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0.125,
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-0.05224609375,
-0.0274658203125,
0.0101318359375,
-0.049560546875,
... | 3,947 | 3947 | |
Absolute value
In mathematics, the absolute value (or modulus which is Latin for a small measure) of a real number is its numerical value without regard to its sign. So, for example, 3 is the absolute value of both
3 and −3. In computer programming, the mathematical function used to perform this calculation is usually... | 4 | [
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0.0703125,
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0.1025390625,
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0.031982421875,
-0.05126953125,
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0.0498046875,
-0.0498046875,
-0... | 3,948 | 3948 | |
A Bayesian perspective on estimating mean, variance, and standard-deviation from data :: Institutional Repository
A Bayesian perspective on estimating mean, variance, and standard-deviation from data Travis E. Oliphant December 5, 2006 Abstract After reviewing some classical estimators for mean, vari... | 5 | [
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-0.0712890625,
-0.0625,
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0.06982421875,
0.049072265625,
-0.0... | 3,949 | 3949 | |
Matrix Algebra Formulas
Re: Matrix Algebra Formulas
Re: Matrix Algebra Formulas
Addition and Subtraction of matrices
Matrices can be added or subtracted only if they are of the same order.
Let
and
then,
Similarly,
Multiplication of matrices
Two matrices A and B can be multiplied if and only if the number of col... | 4 | [
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0.022216796875,
-0.0208740234375,
0.1318359375,
0.002655029296875,
0.09863281... | 3,950 | 3950 | |
Integral
An integral helps to find out how much space is under a graph of something. Integrals undo derivatives. A derivative helps to find the steepness of a graph.
This is the symbol for integration: $\int_\left\{\,\right\}^\left\{\,\right\}$ It was first used by Gottfried Wilhelm Leibniz who used it as a stylized s... | 5 | [
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0.01153564453125,
0.1... | 3,951 | 3951 | |
Review questions part 1 - equations involving the absolute value function.
August 28th 2011, 11:39 AM #1
Newbie
Joined
Aug 2011
Posts
22
Review questions part 1 - equations involving the absolute value function.
Just started university, and I haven't really done math in like a half year at least. Because... | 4 | [
-0.059814453125,
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0.09228515625,
-0.004150390625,
-0.1... | 3,952 | 3952 | |
Example 8.4.2 (c): Derivatives of Power Series
Find the 10th and 11th derivative at zero for the function f(x) = ^x^3/[1-x^2]. As a hint, try to get the geometric series function involved somehow.
The obvious first try is to take 10 derivatives, then substitute x=0. Let's take a few derivatives:
This is getting out ... | 5 | [
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-0.056396484375,
0.00909423828125,
-0.031005859375,
-0.00... | 3,953 | 3953 | |
Expressing adj(A) as a polynomial in A?
up vote 12 down vote favorite
17
Suppose $A\in R^{n\times n}$, where $R$ is a commutative ring. Let $p_i \in R $ be the coefficients of the characteristic polynomial of $A$: $\mathop{\mathrm{det}}(A-xI) = p_0 + p_1x + \dots + p_n x^
n$.
I am looking for a proof that: $-\mathop{... | 5 | [
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0.0439453125,
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0.083496... | 3,954 | 3954 | |
Regularized Least Squares
Recently, I’ve contributed a bunch of improvements (sparse matrix support, classification, generalized cross-validation) to the ridge module in scikits.learn. Since I’m receiving good feedback
regarding my posts on Machine Learning, I’m taking this as an opportunity to summarize some importan... | 4 | [
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0.0299072265625,
-0.03... | 3,955 | 3955 | |
Evaluating parametic derivative
October 31st 2013, 06:09 PM #1
Newbie
Joined
Sep 2012
From
Manhattan
Posts
12
Thanks
1
Evaluating parametic derivative
u = 3t-1 t = v^2-7v w = 7/v ; find du/dw at w= -7
I tried solving for du/dt and got 3
dt/dv = 2v-7 and dw/dv = -7/v^2
I'm not sure ho... | 4 | [
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0.050537109375,
-0.0230712890625,
-0... | 3,956 | 3956 | |
Math Help
September 10th 2009, 08:48 AM #1
Newbie
Joined
Sep 2009
Posts
7
Axioms
Any ideas on how to do this one?
Let A be a set. Show that a complement of A does not exist. So I need to show that there isn't a set of all x not in A.
Oh, I'm sorry. I forgot that I'd called this thread "Axioms"... | 5 | [
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0.07666015625,
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0.0267333984375,
0.01953125,
0.0291748046875,... | 3,957 | 3957 | |
parallel lines
January 26th 2009, 09:06 AM
annabananzaa
parallel lines
write an equation of the line containing the given point and parallel to the given line.
(8,-9)
9x-2y=5
can someone just help me get started on this???
please and thanksss.
January 26th 2009, 09:15 AM
metlx
the par... | 4 | [
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0.0015716552734375,
-0.11425781... | 3,958 | 3958 | |
Re: st: Repeated Measures Manova contrasts
[Date Prev][Date Next][Thread Prev][Thread Next][Date index][Thread index]
Re: st: Repeated Measures Manova contrasts
From David Airey <david.airey@Vanderbilt.Edu>
To statalist@hsphsun2.harvard.edu
Subject Re: st: Repeated Measures Manova contrasts
Date Tue, 23 Oc... | 5 | [
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3 pretty easy questions
For the third one I did 1/(5/4) since cos=1/sec so its cos(y)=4/5 then did cos(2y)=8/5 but it was wrong for the other two, not sure how to start them and what the Qs are exactly asking.
Thanks. Q3, it's right that cos(y)=4/5, but the next step is not right because it's not generally true that c... | 4 | [
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Holomorphic function defined as an integral.
February 19th 2009, 12:06 AM #1
Newbie
Joined
Dec 2008
Posts
23
Holomorphic function defined as an integral.
I do not fully understand the following statement:
"Let f(x) decay faster than any polynomial as x -> infinity, then int_0^infinity f(x) x^{s-1}dx... | 4 | [
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0.000... | 3,961 | 3961 | |
XLSTAT-PLSPM
View tutorialsXLSTAT-PLSPM - PLS Path Modeling Excel add-in - is the only software that allows using the PLS Path Modeling approach without leaving Microsoft Excel. This approach is a powerful data
exploration tool when concepts cannot be directly measured (the latent variables) and are interconnected - ... | 4 | [
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0.02734375,
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0.045166015625,
0... | 3,962 | 3962 | |
2 State The Merits And Demerits Of Measures Of Central Tendency
•
neighbourhoods, would this a random sample? [5 Marks] 2. a) Explain the steps involved in planning of a statistical survey? [5 Marks] b) What are the merits & Demerits of Direct personal
observation and Indirect Oral Interview? [5 Mar... | 4 | [
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-... | 3,963 | 3963 | |
Homework Help
Posted by dianne on Tuesday, October 4, 2011 at 6:14pm.
use the discriminant to determine whether the following equations have solutions that are: tow different rational solutions; two different irrational solutions; exactly one rational solution; or two
different imaginary solutions. 25x^2=10x-1
• Pr... | 4 | [
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-0.035400390625,... | 3,964 | 3964 | |
Problem Set 4
Assigned: March 23
Due: April 6
Problem 1
Construct a resolution proof of sentence (F) from Problem set 3, Problem 3, sentences A-E. You should show (a) the Skolemized form of the axioms and of the negated goal; (b) each of the resolutions
involved in the proof. You need not show the intermediate stag... | 5 | [
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-... | 3,965 | 3965 | |
Differential Equations(Related Rates)
September 26th 2008, 04:43 PM #1
Junior Member
Joined
Sep 2008
Posts
58
Differential Equations(Related Rates)
I am stuck on this question, here it is.
A ball with mass m kg is thrown upward with initial velocity 28m/sec from the roof of a building 11m high. Negl... | 4 | [
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5
BASIC GRAPHS
A constant function
The identity function
The absolute value function
y = x^2: A parabola
The square root function
The cubic function
The reciprocal function
THE FOLLOWING ARE THE GRAPHS that occur throughout analytic geometry and calculus. The student should be able to sketch them -- and reco... | 4 | [
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Limits
July 27th 2006, 11:51 PM
askmemath
Limits
Consider f (x) = (-7x^3 + 2)/(10x^3 + 3x + 2)
a) Construct a table of values to determing lim f(x) x to infinity
b) Use algebra to determin lim f(x)
x to infinity
c) Sketch the graph and indicate on the graph the behavior described by the limit... | 5 | [
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0.140625,
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-0.0341796875... | 3,968 | 3968 | |
Volume Calculation - Contour Method
Volume can be measured by a contour map, but the volume calculated by this method is approximate. It cannot be compared with the volume calculated by the cross-section method. As the full ground
irregularities are not predicted by contours, and also as the contour intervals are not ... | 5 | [
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0.031005859375... | 3,969 | 3969 | |
Complex zeros of $\zeta'(s)/\zeta(s) + \zeta'(1-s)/\zeta(1-s) $ = simpler expression (except at zeta zeros)
up vote 0 down vote favorite
Let $ G(s) := \frac{\zeta'(s)}{\zeta(s)} + \frac{\zeta'(1-s)}{\zeta(1-s)}$ where $s$ is not a zero of zeta.
$G$ has real zeros and a pair of complex zeros near $\frac12 \pm 6i$.
Pa... | 4 | [
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-0.042236328125,
0.01226806640625... | 3,970 | 3970 | |
More Set Theory - HELP
December 28th 2008, 02:06 PM #1
Junior Member
Joined
Nov 2008
Posts
53
More Set Theory - HELP
List the elements {a1, a2, a3, ...} where an is defined as a1 =1, an = na n-1, n E N, 1 < n < 7
Out of 2 marks
Need someone to check my answer please!
Answer:
When n=2,... | 4 | [
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-0.09716796... | 3,971 | 3971 | |
few questions with laplace transform
May 7th 2011, 07:39 PM
Jeonsah
few questions with laplace transform
I am having trouble this this problem.
$y' + 6y = e^4^t, y(0) = 2$
Heres the work I have up until where I get stuck:
$SY(s) - y(0) + 6Y(s) = \frac{1}{s-4}$
$SY(s) - 2 + 6Y(s) = \frac{1}{s-4}$... | 5 | [
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-0.01440429687... | 3,972 | 3972 | |
Calibrating the Ornstein-Uhlenbeck (Vasicek) model
In this article I’ll describe two methods for calibrating the model parameters of the Ornstein-Uhlenbeck process to a given dataset.
• The least squares regression method
• maximum likelihood method
Introduction
The stochastic differential equation (SDE) for the... | 5 | [
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-0.00... | 3,973 | 3973 | |
Integration goes wrong? ( ln(x)/x )
March 10th 2011, 10:00 AM #1
Integration goes wrong? ( ln(x)/x )
$\displaystyle \[I = \int\limits_0^{ + \infty } {\frac{{\ln x}}{x}} dx = \mathop {\lim }\limits_{\gamma \to + \infty } \left( {\int\limits_{1/\gamma }^\gamma {\frac{{\ln x}}{x}dx} } \right)\]$
Because $\disp... | 5 | [
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Fibonacci sequence - prove by induction
December 23rd 2008, 01:58 PM
Dzahdo
Fibonacci sequence - prove by induction
Can someone please help me, I really don't know to do this task. It says it's a Fibonacci sequence. Anyway it could be tommorrow on my exam.
$a_n = {1 \over \sqrt{5}} \times \left[ \left({1 + ... | 5 | [
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0... | 3,975 | 3975 | |
Dimensions of Cardan Shafts
The dimensions of the shaft depend on many factors. The rules below will give an approximate selection. In borderline cases, please consult us. The questionnaires in chapter 12 will help you. We
would be pleased to give you advice.
8.1 Selection of Joint Size for Stationary Drives
The par... | 5 | [
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0.0060... | 3,976 | 3976 | |
Arcadian Functor
M Theory Lesson 175
By placing each knot crossing in a box, we see 4 output lines for each box, defining two ribbon strands. Thus there are always twice as many extra faces (as squares) on an associated polytope in $\
mathbb{R}^{3}$. The associahedron satisfies this condition, as does the
deformed
o... | 4 | [
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... | 3,977 | 3977 | |
Numeracy campaign: maths puzzles by Matt Parker - answers - Telegraph
All of these puzzles relate to adding together consecutive numbers. Mathematicians do not like doing a lot of boring, tedious adding and so are always on the look-out for cunning short-cuts.
Q. Which consecutive numbers add to give these totals?
2... | 4 | [
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-0.054931640625,
... | 3,978 | 3978 | |
Differential Equations (first order)
December 8th 2010, 12:15 PM #1
Junior Member
Joined
Apr 2010
Posts
26
Differential Equations (first order)
I need to solve:
1) (2x-y+5)*dy/dx + x -2y +3=0
here, I made the derivative the subject then substituted to get rid of the constants... in the end I go... | 4 | [
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0.0... | 3,979 | 3979 | |
determine up to isomorphism all groups of order 13^2*3^2
January 9th 2010, 05:27 AM #1
Newbie
Joined
Jan 2010
Posts
2
determine up to isomorphism all groups of order 13^2*3^2
Here's my problem:
determine up to isomorphism all groups of order 13^2*3^2
so far I can do this
Let G be a group s... | 5 | [
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-0.0209960... | 3,980 | 3980 | |
[SOLVED] Line of Symmetry of a Function
May 7th 2010, 08:17 AM #1
Member
Joined
Sep 2009
Posts
148
Q) The function f is defined by f : x → 2x^2 − 12x + 13 for 0 ≤ x ≤ A, where A is a constant
(i) Express f(x) in the form a(x + b)2 + c, where a, b and c are constants.
(ii) State the value of A fo... | 4 | [
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-0.047119140625,
-0.054687... | 3,981 | 3981 | |
Laplace Transform of sin^2t
zetafunc.
Guest
Laplace Transform of sin^2t
Hi all,
I have started learning about Laplace transforms and done some easy examples such as proving that
and
Here's my working:
Using integration by parts we get
then I noticed that
is the Laplace transform of
since by the double-angl... | 5 | [
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-0.00549316406... | 3,982 | 3982 | |
[alt.folklore.computers] Re: Cobol
From: magnus@amp;thep.lu.se (Magnus Olsson)
Newsgroups: alt.folklore.computers
Subject: Re: COBOL
Date: 25 Jan 92 12:46:54 GMT
In article <1992Jan24.205955.3584@amp;ibmpa.awdpa.ibm.com>
lmb@ibmpa.awdpa.ibm.com (Larry Breed) writes:
>Back in the 50's when cobol was being designed, it ... | 4 | [
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The ring of polynomials over a field with no linear term is not a UFD
Let $F$ be a field. Prove that the subset $R \subseteq F[x]$ consisting of all polynomials whose linear coefficient is zero is a subring. Prove also that $R$ is not a unique factorization domain.
To show that $R$ is a subring, we need to see that i... | 5 | [
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Torque
Home > Articles > Torque & Horsepower
Torque vs. Horsepower
If you've been around motorized vehicles for any length of time, you have probably been exposed to the great torque vs. power debate at some point. If not, it goes like this:
"Torque is what makes a bike accelerate, not power."
"Wrong."
Torque an... | 4 | [
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Discrete Mathematics/Set theory/Exercises
From Wikibooks, open books for an open world
Set Theory Exercise 1[edit]
1
Is each of the following a well-defined set? Give brief reasons for each of your answers.
(a) The collection of all alphanumeric characters.
(b) The collection of all tall people.
(... | 4 | [
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Infinity, Pi and Symmetry
Navigation Panel: Previous | Up | Forward | Graphical Version | PostScript version | U of T Math Network Home
University of Toronto Mathematics Network
Question Corner and Discussion Area
Infinity, Pi and Symmetry
Asked by Rudy Shearer, student, westbourne on July 3, 1997:
Please tell ... | 4 | [
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MathGroup Archive: July 2012 [00402]
[Date Index] [Thread Index] [Author Index]
Re: AlgebraicRules
• To: mathgroup at smc.vnet.net
• Subject: [mg127485] Re: AlgebraicRules
• From: Andrzej Kozlowski <akozlowski at gmail.com>
• Date: ... | 5 | [
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please help--- word problem
October 2nd 2005, 11:53 AM #1
Newbie
Joined
Aug 2005
Posts
16
please help--- word problem
small car and a van share 110 gallons of gas. car gets twice as many miles to the gallon. if the car drove 600 miles and the van drove 800 miles. How many gallons of gas did the van use?
... | 4 | [
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Word numbers, Part 4: Sort the words, sum the numbers
In the last post in this series, we figured out:
If the integers from 1 to 999,999,999 are written as words in numerical order and concatenated, what is the 51 billionth letter?
The goal of this final post is to figure out:
If the integers from 1 to 999,9... | 5 | [
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umber
2 Complex numbers
2.5 Modulus of a complex number
We also need the idea of the modulus of a complex number. Recall that the modulus of a real number x is defined by
For example, |7| = 7 and |−6| = 6.
In other words, |x| is the distance from the point x on the real line to the origin. We extend this definition... | 4 | [
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Solving a Cubic equation
Moderator
Registered: 2005-06-22
Posts: 4,900
Re: Solving a Cubic equation
Member
Registered: 2005-12-04
Posts: 30
Re: Solving a Cubic equation
irspow wrote:
.93968
This took four iterations using Newton's Method.
x - f(x)/f'(x)
I cannot help but wond... | 5 | [
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How to find the equation of a Parabola
June 1st 2009, 07:38 PM #1
How to find the equation of a Parabola
Hi,
Could someone explain step-by-step, how to work through this type of sums:
"Find the equation of the quadratic which passes through the points with coordinates:
(-2,-1), (1,2), (3,-16)"
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Optimization Segment Minimum
April 13th 2010, 12:19 PM
robertosavin
Optimization Segment Minimum
A line through the point (2,2) cuts the x and y axes at A and B. Find the minimum length of the segment AB.
April 13th 2010, 03:07 PM
zzzoak
OA=2+x x-distance from x=2 to the right
tg a = 2/x
OB=(2+x)t... | 5 | [
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or
E11 Lab #4
Prelab
2008
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Nucleation from own melt.
by Leonid Sakharov
A phenomena of spontaneous appearance of crystal phase inside of liquid and then self sustained... | 4 | [
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Galilean transformation
December 14th 2012, 06:28 AM
Bigum
Galilean transformation
I'm doing an assignment on special relativity and want some maths drawn into it. To be more specific I'm working on time dilation, and I found this wonderful website with demonstrations (I hope I
am not breaking any rules by l... | 4 | [
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A Self-Balancing Robot – I
Building a self-balancing robot is one of those things that every hobbyist and engineer want to do. But there are a few hurdles for a lot of people. There is the theory on the one hand and then there
is the mechanics on the other. In this and the next few posts, I will show you a self-balanci... | 4 | [
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Math Help
September 10th 2010, 02:11 AM #1
congruence
Show that for any positive integer $n$, there exist a prime number $p$ and another positive integer $m$ such that:
(1) $p$ is a prime numer of form $6k+5$;
(2) $n$ is not a multiple of $p$;
(3) $n-m^3$ is a multiple of $p$.
Edit: nevermind, d... | 4 | [
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